The researchers suggested pressure on hospitals during the day and "convenience factors" could be to blame.
Changes in Britain's Chinese economy, and government immigration policies, may also be to blame.
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But Minority Leader John Boehner said the bill would be to blame for no progress.
In 2, 056 cases, police were held to be to blame, at least to some degree.
After all, what else could possibly be to blame for such an extreme event?
Police said the deaths may be linked and are investigating if contaminated illegal drugs may be to blame.
But EPEAT's CEO, Robert Frisbee, says Apple's "design direction" may be to blame.
Concern about falling sales and the threat of regulation may be to blame.
Others in the profession are adamant that teachers should not be to blame.
The Council of Ministers would be to blame if structural funds to his Welsh constituency were cut, he said.
And so, the researchers suggest one possible explanation that will surprise very few - insider trading may be to blame.
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An electricity company has said swans could be to blame for a number of power cuts in a Cambridgeshire village.
Or is that how this guy's mind works -- that every time something bad happens, an immigrant must be to blame?
Reports from Nepal suggest pilot error may be to blame for the crash which also killed seven Nepalis and five Chinese nationals.
Ironically, the greater stability of the world economy may be to blame.
That is, if Iran acquires nuclear weapons, Israel will be to blame.
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It was a major surprise that none of the Pakistan players were snapped up, but fears over visa problems may be to blame.
It found that most cases involved contact lens wearers in southern England and suggested hard water in the area could be to blame.
In other words, structural problems with the economics of retirement, not the marketing machines at American Express, Visa and MasterCard, may be to blame.
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Data from more than 500, 000 children in more than 50 countries suggests poor diet may be to blame for rising levels of these allergy-related conditions.
An unprecedented extension of jobless benefits may also be to blame.
So given that these things aren't entirely scientific, if they don't make progress we won't be sure how much David Ford's honesty will be to blame.
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The alarmists and their media allies aggressively focused attention on the study and made the additional assertion that global warming and carbon dioxide emissions must be to blame.
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Competition between transplant centres may be to blame, experts say.
The pilots - Flight Lieutenants Jonathan Tapper and Richard Cook - were said to be to blame but the conclusion has been strongly contested by their families and some politicians.
While some theories suggest that connections between neurons or nerve cells may be to blame for autism, it is unclear if stem cell therapy may help to restore such connections.
The refusal gives Welsh Ministers the chance to blame UK Ministers for any future large windfarm developments in Mid Wales although David Jones says Welsh planning guidance would be to blame.
According to the Treasury, if interest rates do have to rise further, private firms and their workers will be to blame, for agreeing on big pay rises without corresponding improvements in productivity.
Of course, these findings only suggest that oily fish, or the lack of it, could be to blame - many other items have either left or joined the national diet during that period.
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